Funding for this research was provided by:
European Social Fund (EURA2014/540/09 02 01 01/2014/STM)
Article History
Received: 1 February 2019
Accepted: 28 November 2019
First Online: 14 December 2019
Compliance with ethical standards
:
: The authors declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
: All procedures performed in studies were in accordance with the ethical standards of the institutional research committee (Ethical Committee of Finnish Institute of Occupational Health, approved 6/2017) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.